[9p-E202-1~15] 1.4 Energy conversion, storage, resources and environment

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[9p-E202-1] [The 60th Young Scientist Presentation Award Speech] Enantioselective Adsorption and Electrocatalytic Reactions at Chiral Electrode Interfaces

〇Sayuki Oka¹, Masaru Kato^2,3, Ryuto Ohashi⁴, Hisayoshi Matsushima⁴, Takahide Yamaguchi⁵, Aozora Sugai⁵, Shogo Hoshino³, Ichizo Yagi^2,3 (1.RIES, Hokkaido Univ., 2.Faculty Env. Earth Sci., Hokkaido Univ., 3.Grad. School Env. Sci., Hokkaido Univ., 4.Grad. School Eng., Hokkaido Univ., 5.College of Science, Ibaraki Univ.)

Keywords:

chiral electrode interfaces,enantioselective adsorption,electrocatalytic reactions

A metalloenzyme laccase was immobilized on amino acid–modified Au(111) single crystalline electrodes, and the effect of enantioselective adsorption of laccase on the oxygen reduction reaction (ORR) activity was investigated. The ORR current densities were found to depend on the chirality of the modifying amino acid. In contrast, when the current densities were normalized by the immobilization density, no difference was observed, indicating that the apparent activity difference originated from differences in the amount of enantioselective adsorption. Based on the insights gained from this study, our research has been extended to energy conversion reactions using inorganic chiral materials.